Can I use more than one SignaLink USB on my computer at the same time?
Yes. If your computer is fast enough, you can have one SignaLink USB attached to each USB port, and be running all of them at the same time using different communications programs (or multiply instances of the same program). We have successfully tested three SignaLink USB units running PSK31 at the same time on a 1.6Ghz PC. A slower computer might also work fine, but a faster one might be required depending on the demands of your communication program(s).